morison



D. B. MORISON. INDICATING AND RECORDING APPARATUS. APPLICATION FILED APR. 9. 191a. RENEWED FEB. 19,1920.

Patented M31. 30, 1920.

a SHEETS-SHEET 1 D. B. MORISON. INDICATING AND-RECORDING APPARATUS. APPLICATION FILED APR. 9. 191a. RENEWED FEB. 19, 1920.

Patented Mar. 30, 1920.

3 SHEETS-SHEET 2 lumen/(02 urns Jioipils'oia,

A'tfy D. B. MORISON.

INDICATING AND RECORDING APPARATUS. -APPL|CATION FILEDAPR. 9. 191a. RENEWED FEB. 19, 1920.

3 SHEETS-SHEET 3- Inventor: flonald arm 12 702: an,

Pafented Mar. 30, 1920.

UNTTED STATES TEhTT QF IiF/E.

DONALD BABNS MORISON, OF HARTLEPOOL, ENGLAND.

Specification of Letters latent.

iatented Mar. 30, 19.21

Application filed April 9, 1918, Serial No. 227,543. Renewed February 19, 1320. Serial No. 359,852.

b all whom it may concern:

Be it known that I, DONALD BARNS MonrsoN, a subject of the King of Great Britain and Ireland, residing at Hartlepool, in the county of Durham, England, have invented the Improvements in Indicating and Recording Apparatus of which the following is a specification.

This invention relates to indicating and recording apparatus and has reference to apparatus of that general character where electrical or other impulses act cumulatively to impart movement to an indicator.

Such apparatus if associated with a clock or timing device can be used for many purposes and in particular if arranged so as to be thrown into and out of operation in accordance with the starting and stopping of mechanism can be used for giving a positive indication of the time during which the mechanism has been in operation.

The object of the present invention is to provide an improved and more generally effective and convenient apparatus which while primarily designed for the aforesaid purpose of determining the periods of activity and inactivity of a machine may be used for other purposes and the invention consists broadly of a device or apparatus comprising an electromagnetic device for imparting through suitable mechanism to a screw, and a saddle or nut like indicator adapted to rest on or against and be actuated by the screw so that its position relative to the screw is a positive indication of the number of impulses imparted to. the screw and consequently the position of this indicator at any moment will give the actual time during which the apparatus has been operating. By providing for the starting and stopping'of the apparatus in accordance with the starting and stopping of machine tool, for instance, it follows that the indicator will give the total period during which the machine tool has been in operation. I may so calibrate a surface along which the indicator travels as'to show. at a glance the number of hours and- (or) the percentage of a given total time, which the machine has been working.

Features of my invention of practical importance which may be specifically mentioned are the provision of means for readily resetting the indicator to zero, and the provision for indicating separately for desired periods as for example for day and night shifts which latter involves the pro- VlSlOIl of means for transferring the inipulses either electrically or mechanically from one screw or another at the end of illustrated one practical embodiment of the invention which it will be understood is given by way of example only and does not exhaust the possible forms my invention may take within the scope of the appended claims. In these drawings- Figure l is a front elevational view partly in section of a device constructed in accordance with my invention.

Fig. 2 is a sectional view thereof on the line A-A of Fig. 1.

Figs. 3 and f are side and plan views respectively to a larger scale of the essential mechanism associated with the screw threaded spindles.

Fig. 5 is a side elevational view of the bracket which carries the electro-magnet and its associated mechanism, and

Fig. 6 is a diagram of the essential electrical connections.

Referring to these drawings I provide a box or case l'in the front of which slots or guides 2 are provided along which indicators or pointers 3 are constrained to slide and these indicators 01' pointers 3 are in the form of or are connected to half nuts or screw threaded saddles 4L- which engage rotatable screw threaded spindles 5. Each screw threaded spindle 5 is carried by a pivoted bracket 6 which also carries an electromagnet 7 adapted to be energized periodically by and in accordance with the well known principle of an electric clock as will hereafter more fully appear. The spring controlled armatures 8 of the magnets 7 carry pawl like devices 9 each of which cooperates with ratchet wheel 10 carried by one or other of the screw threaded rotatable spindles 5. Preferably the electro-magnetic action moves the pawl 9 forward and the spring 11 controlling the armature operates to move the ratchet upon the return movement of the armature. The pawl 9 may be and preferably is provided with a wedge like surface 12 which interengages with another stationary wedge surface 13 so that when not operating itlocks the ratchet wheel and also prevents it from being moved more than one tooth for each impulse of the magnet, and as a consequence the screw threaded spindle 5 is iinitely controlled.

The screw threaded spindles are maintained in engagement with the half nut-s l or the like 01" the indicators or pointers 3 either by gravity or light springs and it will be understood that rotation of the spindles 5 causes the half nuts i and indicators or pointers 3 to travel along them.

Associated with the apparatus is some form of switch 1% operated from the belt shifting or other starting and stopping mechanism of the machine tool or the like, and so arranged that impulses are only sent through the magnet coils when the machine is in operation.

The apparatus can be arranged so that the screw threaded. spindles 5 are either horizontally or vertical disposed but the latter is preferable since with his arrangement resetting can be effected by simply moving the screw threaded spindles about their pivotal support sufficiently to disenge them from the lllilldlltfil' n. i i

This

latter will at once fall to zero posit is illustrated in Figs. 1 2 and upon ence to which it will be that the pivot ed brackets 6 are mounted upon a common rod 15 and are provided with notches 16 and a plate 17 carried by a rotatable shaft 18 is provided and it will be readily understood that by turning this plate to engage the notches all the brackets 6 can be turned suf' ficiently about the rod 15 to disengage the screw threaded spindles 5 from the nut like oevices which will then fall and carry the indicators or pointers h them. The brackets 6 are preferably in -v y hung upon the shaft 15 and in order to permit of their ready removal and replacement they are slotted as at 6'" and a taped hole 6" may be proi' ided in the t: T) plate into which a screw threaded l'iQ/V iY .1 ill) in in t the bracliets 6 and cir assor nism being: eas' i nipulm dos -fired to remove or i them.

in operation the indicators are at zero at the commencement of each day and at all times during the day whei'i the niachine tool is in i the d shift it s operates ibly associated that at the end oi the day shi the impulses are cut of? or transt'erred to operate the night shift indie store, when such are provided. The calibrations may be permanently engraved upon the surface over which the indicators move or removable cards may be provided. The indicator may also it desirable carry a pencil or other marking device indicated 1.9 for making a permanent record on the card. The calibrations on the scale are preferably arranged for the actual hours of operation-- that is to say the meal and the rest times are ClfiClLlClliitlS0 that upon one line 21 of the scale there is a time indication in hours and fractions of hours and the other line 22 of the scale gives the percentage of the total time.

Any number of devices may be carried side by sioe upon the rod or shaft 15. The method of using the device will be clear upon reference to Fig. 6. Every half minute or other predetermined period the clock C which may be an ordinary electric clock completes the circuit of the battery B by closing the switch S subject to the starting switch 14 being closed. This switch 14% is associated with the starting lever L of the machine tool it is desired to time so that there will only be a complete circuit through the magnets 7 every half minute and then only ii the switch S is closed, which means or" course, if the machine tool is in operation. It will be appreciated that in some types of apparatus the impulses may be im- 'iarted mechanically instead of electrically particularly where such an apparatus is employed as a revolution counter or an apparatus where the impulses are imparted by hand may be provided for ordinary countinn and checking purposes.

l Vhat I claim is:

1 A cumulative indicator comprising a chart a pointer movable relative to said Chara a nut like device associated with said pointer, a screw engaging and actuating said nut like device, an electro-niagnet having a movable armature, means "for closing: the circuit through said electro-magnet at predetermined intervals, and means for utilizing the movement of the armature of said electro-magnet to impart movements to said screw. v

2. A cumulative indicator comprising a chart, a pointer movable relative to said chart, a. nut like device associated with said pointer, a screw engaging and actuating said nut like device, an electro-magnet having a movable armature, a clock a switch associated with said clock and operating periodically and synchronously with said clock to close circuit through said electr'o-magnet at predetermined intervals, and means for utilizing the movement of the armature of said electro-maarnct to impart definite movements to said screw.

3. A cumulative indicator comprising a chart a pointer movable relative to said chart, a nut like device associated with said pointer, a screw engaging and actuating said nut like device an electro-magnet having a movable armature, clock, a switch asso ciated with said clock and operating periodically and synchronously with said clock to close circuit through said electro-magnet at predetermined intervals a second switch as sociated with the controlling means of a machine for preventing closure of the circuit through said electro-magnet except when said handle is in position corresponding to the running of the machine, and means for utilizing the movement out the armature of said electro-magnet to impart definite movements to said screw.

4. cumulative indicator comprising a chart, a pointer movable relative to said chart, nut like device associated with said pointer, a screw engaging and actuating said nut like device, an electro-magnet having a movable armature, a pivotally supported bracket carrying said screw and said electrounagnet, means for closing the circuit ll; 1 said electro-niagnet at predetermined intervals, and means for utilizing the movement of the armature of said electro-magnet to impart movements to said 5. A cumulative indicator comprising a chart, a pointer movable relative to said chart, a nut like device associated with said pointer, screw engaging anc actuating said nut like device, an electro-magnet having a movable armature, a pivotally supported bracket carrying said screw and said electro-niagnet, having its center of gravity disposed so as to bias said screw to its operative position engaging said nut, means for moving said bracket about its pivot to disengage said screw from said nut to permit said nut to {all by gravity to zero position, means for closing the circuit through said electro-magnet at predetermined intervals, and means for utilizing the movement of the armature of said electro-magnet to impart m vements to said screw.

6. A cumulative indicator comprising a pointer movable relative to. a chart, a nut like device actuating said pointer, pivotally supported screw engaging and actuating said nut like device, means for imparting predeteri'nined rotary motion to said. screw, and means for moving said screw about its pivot for disengagin said screw from said nut like device to permit resettins; of said pointer in zero position.

7. A cumulative indicator comprising a chart, a pointer movable relative to said chart, a nut like devic associated with said pointer, a screw engaging and actuating said nut like device, an electro-magnet having a movable armature, means for closing the circuit through said electromagnet at predetermined intervals, a ratchet rigidly connected to said screw, and a pawl associated with the armature of the electro-magnet for cooperating with said ratchet to impart movements to said screw.

8. A cumulative indicator comprising a chart, a pointer movable relative to said chart, a nut like device associated with said pointer, a screw engaging and actuating said nut like device, an electromagnet having a movable armature, a spring biasing said armature to retracted position, means for closing the circuit through said electromagnet at predetermined intervals, a ratchet rigidly connected to said screw, and a pawl associated with the armature of the electromagnet for cooperating with said ratchet under the influence of the spring to impart movements to said screw.

9. A cumulative indicator comprising a pointer movable relative to a chart, a nut like device associated with and movingsaid pointer, a screw engaging said nut like device. electrical means for periodically actuating said screw, a clock, a switch con.- trolled by said clock for regulating the pe riodic actuation, and a master switch associated with the starting device of a machine for completing circuit through said electrical actuating means subject to periodic con trol by said clock.

10. A cumulative indicator comprising a pointer movable relative to. a chart, a nut like device associated with and moving said pointer, a screw engaging said nut like device, electrical means for periodically actuating said screw, a master switch associated with the starting device of amachine for completing circuit through said actuating means only when said starting device is in position corresponding to the running of the machine, a clock, and a switch controlled by said clock operating to close a circuit through the actuating means periodically subject to control by said master switch.

11. A cumulative indicator comprising a pair of pointers movable relative to a chart, a nut like device associated with and moving each of said pointers, a pair of screws each engaging one of said nut like devices, electrical means for periodically actuating said screws, a clock, a switch controlled by said clock for regulating the periodic actuation, a master switch associated with the starting device of a machine for completing circuit through said electrical actuating means subject to periodic control by said clock.

12. A cunmlative indicator comprising pointers n'iovable relative toa. chart, nut like devices associated with and moving said pointers, screws on ging said nut like devices, electrical means for periodically actua ating said screws, a master switch associated with the starting device of a machine for completing circuit through said actuat ing means only when said starting device is in position corresponding to the running of the machine, a clock, and a switch controlled by said clock operating to close a circuit through the actuating means periodically subject to control by said master switch.

13. A cumulative indicator comprising a chart, a pointer movable relative to said chart, a nut like device associated With ,said pointer, a screw engaging and actuating said nut like device, an electro-magnet having a movable armature, a fixed shaft, a bracket movably and pivot-ally suspended on said shaft carrying said screw and said electromagnet, an opening in the upper part said bracket, means for engaging said open ing to permit said bracket and its associated mechanism to be removed, means for closing the circuit through said electro-magnet at predetermined intervals, and means for utilizing the movement of the armature of said electro-magnet to impart movements to said screw.

1%. A cumulative indicator comprising charts, pointers movable relative to said charts, nut like devices associated with and DGNALD BARNS MZORISON.

\Vitnesses WHLLIAM EDMONDS Lovnnmen, HENRY HAVELOCK GALLIMORE. 

